1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3 4 #ifndef _ASM_CSKY_THREAD_INFO_H 5 #define _ASM_CSKY_THREAD_INFO_H 6 7 #ifndef __ASSEMBLY__ 8 9 #include <linux/version.h> 10 #include <asm/types.h> 11 #include <asm/page.h> 12 #include <asm/processor.h> 13 14 struct thread_info { 15 struct task_struct *task; 16 void *dump_exec_domain; 17 unsigned long flags; 18 int preempt_count; 19 unsigned long tp_value; 20 mm_segment_t addr_limit; 21 struct restart_block restart_block; 22 struct pt_regs *regs; 23 unsigned int cpu; 24 }; 25 26 #define INIT_THREAD_INFO(tsk) \ 27 { \ 28 .task = &tsk, \ 29 .preempt_count = INIT_PREEMPT_COUNT, \ 30 .addr_limit = KERNEL_DS, \ 31 .cpu = 0, \ 32 .restart_block = { \ 33 .fn = do_no_restart_syscall, \ 34 }, \ 35 } 36 37 #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) 38 39 static inline struct thread_info *current_thread_info(void) 40 { 41 unsigned long sp; 42 43 asm volatile("mov %0, sp\n":"=r"(sp)); 44 45 return (struct thread_info *)(sp & ~(THREAD_SIZE - 1)); 46 } 47 48 #endif /* !__ASSEMBLY__ */ 49 50 /* entry.S relies on these definitions! 51 * bits 0-5 are tested at every exception exit 52 */ 53 #define TIF_SIGPENDING 0 /* signal pending */ 54 #define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ 55 #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 56 #define TIF_SYSCALL_TRACE 5 /* syscall trace active */ 57 #define TIF_DELAYED_TRACE 14 /* single step a syscall */ 58 #define TIF_POLLING_NRFLAG 16 /* poll_idle() is TIF_NEED_RESCHED */ 59 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ 60 #define TIF_FREEZE 19 /* thread is freezing for suspend */ 61 #define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */ 62 #define TIF_SECCOMP 21 /* secure computing */ 63 64 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) 65 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) 66 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) 67 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) 68 #define _TIF_DELAYED_TRACE (1 << TIF_DELAYED_TRACE) 69 #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) 70 #define _TIF_MEMDIE (1 << TIF_MEMDIE) 71 #define _TIF_FREEZE (1 << TIF_FREEZE) 72 #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) 73 #define _TIF_SECCOMP (1 << TIF_SECCOMP) 74 75 #endif /* _ASM_CSKY_THREAD_INFO_H */ 76